This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 22 |
| 1 | 67 |
| 2 | 181 |
| 3 | 401 |
| 4 | 831 |
| 5 | 1576 |
| 6 | 2876 |
| 7 | 4987 |
| 8 | 8406 |
| 9 | 13715 |
| 10 | 21893 |
| 11 | 34134 |
| 12 | 52327 |
| 13 | 78785 |
| 14 | 116982 |
| 15 | 171259 |
| 16 | 247826 |
| 17 | 354482 |
| 18 | 502090 |
| 19 | 704265 |
| 20 | 979528 |
| 21 | 1351109 |
| 22 | 1849932 |
| 23 | 2514723 |
| 24 | 3396262 |
| 25 | 4557867 |
| 26 | 6081466 |
| 27 | 8068930 |
| 28 | 10650479 |
| 29 | 13987419 |
| 30 | 18283999 |